./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 213c19133f8e1eb8e04c1430c89bd3923e29e833639b74dc68815899bbf3f9fa --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:06:58,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:06:58,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:06:58,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:06:58,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:06:58,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:06:58,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:06:58,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:06:58,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:06:58,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:06:58,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:06:58,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:06:58,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:06:58,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:06:58,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:06:58,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:06:58,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:06:58,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:06:58,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:06:58,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:06:58,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:06:58,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:06:58,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:06:58,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:06:58,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:06:58,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:06:58,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:06:58,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:06:58,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:06:58,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:06:58,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:06:58,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:06:58,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:06:58,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:06:58,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:06:58,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:06:58,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:06:58,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:06:58,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:06:58,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:06:58,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:06:58,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:06:58,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:06:58,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:06:58,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:06:58,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:06:58,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:06:58,753 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:06:58,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:06:58,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:06:58,753 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:06:58,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:06:58,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:06:58,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:06:58,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:06:58,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:06:58,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:06:58,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:06:58,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:06:58,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:06:58,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:06:58,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:06:58,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:06:58,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:06:58,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:06:58,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:06:58,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:06:58,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:06:58,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:06:58,756 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:06:58,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:06:58,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:06:58,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:06:58,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 213c19133f8e1eb8e04c1430c89bd3923e29e833639b74dc68815899bbf3f9fa [2021-12-21 16:06:58,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:06:58,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:06:58,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:06:58,970 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:06:58,971 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:06:58,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-12-21 16:06:59,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f2f5bff5/96eead3c63fb43a482d9ca4e192b558a/FLAG051538c75 [2021-12-21 16:06:59,773 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:06:59,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-12-21 16:06:59,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f2f5bff5/96eead3c63fb43a482d9ca4e192b558a/FLAG051538c75 [2021-12-21 16:07:00,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f2f5bff5/96eead3c63fb43a482d9ca4e192b558a [2021-12-21 16:07:00,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:07:00,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:07:00,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:07:00,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:07:00,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:07:00,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:07:00" (1/1) ... [2021-12-21 16:07:00,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acfd07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:00, skipping insertion in model container [2021-12-21 16:07:00,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:07:00" (1/1) ... [2021-12-21 16:07:00,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:07:00,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:07:03,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i[553894,553907] [2021-12-21 16:07:03,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:07:03,656 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:07:04,469 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i[553894,553907] [2021-12-21 16:07:04,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:07:04,642 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:07:04,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04 WrapperNode [2021-12-21 16:07:04,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:07:04,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:07:04,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:07:04,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:07:04,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04" (1/1) ... [2021-12-21 16:07:04,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04" (1/1) ... [2021-12-21 16:07:05,207 INFO L137 Inliner]: procedures = 457, calls = 15318, calls flagged for inlining = 154, calls inlined = 76, statements flattened = 12878 [2021-12-21 16:07:05,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:07:05,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:07:05,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:07:05,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:07:05,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04" (1/1) ... [2021-12-21 16:07:05,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04" (1/1) ... [2021-12-21 16:07:05,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04" (1/1) ... [2021-12-21 16:07:05,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04" (1/1) ... [2021-12-21 16:07:05,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04" (1/1) ... [2021-12-21 16:07:05,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04" (1/1) ... [2021-12-21 16:07:05,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04" (1/1) ... [2021-12-21 16:07:05,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:07:05,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:07:05,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:07:05,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:07:05,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04" (1/1) ... [2021-12-21 16:07:05,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:07:05,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:07:05,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 16:07:05,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 16:07:05,841 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-21 16:07:05,841 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-21 16:07:05,841 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_regs [2021-12-21 16:07:05,841 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_regs [2021-12-21 16:07:05,841 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_capture_area_set [2021-12-21 16:07:05,841 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_capture_area_set [2021-12-21 16:07:05,841 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2021-12-21 16:07:05,841 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2021-12-21 16:07:05,841 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2021-12-21 16:07:05,842 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2021-12-21 16:07:05,842 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_mmap [2021-12-21 16:07:05,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:07:05,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:07:05,842 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_stop_streaming [2021-12-21 16:07:05,842 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_stop_streaming [2021-12-21 16:07:05,842 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_device_unregister [2021-12-21 16:07:05,842 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_device_unregister [2021-12-21 16:07:05,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-21 16:07:05,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-21 16:07:05,843 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-21 16:07:05,843 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-21 16:07:05,843 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2021-12-21 16:07:05,843 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2021-12-21 16:07:05,843 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-21 16:07:05,843 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-21 16:07:05,843 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_ac97 [2021-12-21 16:07:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_ac97 [2021-12-21 16:07:05,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_em28xx [2021-12-21 16:07:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_em28xx [2021-12-21 16:07:05,844 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-12-21 16:07:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-12-21 16:07:05,844 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-21 16:07:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-21 16:07:05,844 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-12-21 16:07:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-12-21 16:07:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2021-12-21 16:07:05,845 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2021-12-21 16:07:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 16:07:05,845 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 16:07:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2021-12-21 16:07:05,845 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2021-12-21 16:07:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-12-21 16:07:05,845 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-12-21 16:07:05,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:07:05,846 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_vbi_supported [2021-12-21 16:07:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_vbi_supported [2021-12-21 16:07:05,846 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-21 16:07:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-21 16:07:05,846 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:07:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:07:05,846 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_copy_video [2021-12-21 16:07:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_copy_video [2021-12-21 16:07:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2021-12-21 16:07:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2021-12-21 16:07:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_chip_ident [2021-12-21 16:07:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_chip_ident [2021-12-21 16:07:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2021-12-21 16:07:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2021-12-21 16:07:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2021-12-21 16:07:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2021-12-21 16:07:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg_req [2021-12-21 16:07:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg_req [2021-12-21 16:07:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:07:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ctrl_urb_lock_of_em28xx [2021-12-21 16:07:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ctrl_urb_lock_of_em28xx [2021-12-21 16:07:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-21 16:07:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-21 16:07:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_buffer_done [2021-12-21 16:07:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_buffer_done [2021-12-21 16:07:05,849 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-21 16:07:05,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-21 16:07:05,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ctrl_urb_lock_of_em28xx [2021-12-21 16:07:05,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ctrl_urb_lock_of_em28xx [2021-12-21 16:07:05,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:07:05,849 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-12-21 16:07:05,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-12-21 16:07:05,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-12-21 16:07:05,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-12-21 16:07:05,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:07:05,850 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_i2c_unregister [2021-12-21 16:07:05,850 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_i2c_unregister [2021-12-21 16:07:05,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 16:07:05,850 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 16:07:05,850 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-21 16:07:05,850 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-21 16:07:05,850 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2021-12-21 16:07:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2021-12-21 16:07:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-21 16:07:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-21 16:07:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2021-12-21 16:07:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2021-12-21 16:07:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-12-21 16:07:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2021-12-21 16:07:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2021-12-21 16:07:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure video_mux [2021-12-21 16:07:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mux [2021-12-21 16:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-21 16:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_audio_analog_set [2021-12-21 16:07:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_audio_analog_set [2021-12-21 16:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-21 16:07:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-21 16:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-21 16:07:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-21 16:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_prepare [2021-12-21 16:07:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_prepare [2021-12-21 16:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_start_analog_streaming [2021-12-21 16:07:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_start_analog_streaming [2021-12-21 16:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2021-12-21 16:07:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2021-12-21 16:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg [2021-12-21 16:07:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg [2021-12-21 16:07:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_reg_len [2021-12-21 16:07:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_reg_len [2021-12-21 16:07:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-21 16:07:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-21 16:07:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-12-21 16:07:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure get_ressource [2021-12-21 16:07:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ressource [2021-12-21 16:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-12-21 16:07:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-12-21 16:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_outfmt [2021-12-21 16:07:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_outfmt [2021-12-21 16:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:07:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-21 16:07:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-21 16:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-21 16:07:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-21 16:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_set_plane_payload [2021-12-21 16:07:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_set_plane_payload [2021-12-21 16:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_poll [2021-12-21 16:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2021-12-21 16:07:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2021-12-21 16:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-21 16:07:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-21 16:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_v4l2_close [2021-12-21 16:07:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_v4l2_close [2021-12-21 16:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg_req_len [2021-12-21 16:07:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg_req_len [2021-12-21 16:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-12-21 16:07:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-12-21 16:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg_bits [2021-12-21 16:07:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg_bits [2021-12-21 16:07:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:07:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:07:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:07:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:07:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-21 16:07:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-21 16:07:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_s_ctrl [2021-12-21 16:07:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_s_ctrl [2021-12-21 16:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 16:07:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 16:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2021-12-21 16:07:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2021-12-21 16:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_buffer_prepare [2021-12-21 16:07:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_buffer_prepare [2021-12-21 16:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_release_resources [2021-12-21 16:07:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_release_resources [2021-12-21 16:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-21 16:07:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-21 16:07:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-12-21 16:07:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-12-21 16:07:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_em28xx [2021-12-21 16:07:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_em28xx [2021-12-21 16:07:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_regs_req [2021-12-21 16:07:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_regs_req [2021-12-21 16:07:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:07:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-12-21 16:07:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-12-21 16:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_chip_info [2021-12-21 16:07:05,861 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_chip_info [2021-12-21 16:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_video_format [2021-12-21 16:07:05,861 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_video_format [2021-12-21 16:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2021-12-21 16:07:05,861 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2021-12-21 16:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2021-12-21 16:07:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2021-12-21 16:07:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 16:07:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 16:07:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-21 16:07:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-21 16:07:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_resolution_set [2021-12-21 16:07:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_resolution_set [2021-12-21 16:07:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-21 16:07:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-21 16:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_is_ac97_ready [2021-12-21 16:07:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_is_ac97_ready [2021-12-21 16:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-21 16:07:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-21 16:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2021-12-21 16:07:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2021-12-21 16:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_v4l2_open [2021-12-21 16:07:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_v4l2_open [2021-12-21 16:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_plane_size [2021-12-21 16:07:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_plane_size [2021-12-21 16:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 16:07:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 16:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-12-21 16:07:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-12-21 16:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:07:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:07:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:07:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_uninit_usb_xfer [2021-12-21 16:07:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_uninit_usb_xfer [2021-12-21 16:07:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure finish_field_prepare_next [2021-12-21 16:07:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_field_prepare_next [2021-12-21 16:07:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_ac97 [2021-12-21 16:07:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_ac97 [2021-12-21 16:07:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_wake_i2c [2021-12-21 16:07:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_wake_i2c [2021-12-21 16:07:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure size_to_scale [2021-12-21 16:07:05,866 INFO L138 BoogieDeclarations]: Found implementation of procedure size_to_scale [2021-12-21 16:07:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_drv_priv [2021-12-21 16:07:05,866 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_drv_priv [2021-12-21 16:07:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2021-12-21 16:07:05,866 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2021-12-21 16:07:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure scale_to_size [2021-12-21 16:07:05,866 INFO L138 BoogieDeclarations]: Found implementation of procedure scale_to_size [2021-12-21 16:07:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2021-12-21 16:07:05,866 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2021-12-21 16:07:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2021-12-21 16:07:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2021-12-21 16:07:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2021-12-21 16:07:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2021-12-21 16:07:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:07:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:07:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:07:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_plane_vaddr [2021-12-21 16:07:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_plane_vaddr [2021-12-21 16:07:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-21 16:07:05,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-21 16:07:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_capture_start [2021-12-21 16:07:05,868 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_capture_start [2021-12-21 16:07:06,533 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:07:06,536 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:07:28,669 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:07:28,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:07:28,695 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 16:07:28,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:07:28 BoogieIcfgContainer [2021-12-21 16:07:28,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:07:28,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:07:28,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:07:28,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:07:28,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:07:00" (1/3) ... [2021-12-21 16:07:28,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b43536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:07:28, skipping insertion in model container [2021-12-21 16:07:28,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:07:04" (2/3) ... [2021-12-21 16:07:28,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b43536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:07:28, skipping insertion in model container [2021-12-21 16:07:28,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:07:28" (3/3) ... [2021-12-21 16:07:28,711 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-12-21 16:07:28,715 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:07:28,715 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:07:28,769 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:07:28,776 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 16:07:28,776 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:07:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 1900 states, 1392 states have (on average 1.3915229885057472) internal successors, (1937), 1417 states have internal predecessors, (1937), 395 states have call successors, (395), 111 states have call predecessors, (395), 111 states have return successors, (395), 394 states have call predecessors, (395), 395 states have call successors, (395) [2021-12-21 16:07:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 16:07:28,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:28,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:07:28,820 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:28,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:28,824 INFO L85 PathProgramCache]: Analyzing trace with hash 284761344, now seen corresponding path program 1 times [2021-12-21 16:07:28,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:28,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695453287] [2021-12-21 16:07:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:28,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:07:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:30,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:30,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695453287] [2021-12-21 16:07:30,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695453287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:30,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:30,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:07:30,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16795373] [2021-12-21 16:07:30,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:30,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:07:30,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:30,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:07:30,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:07:30,597 INFO L87 Difference]: Start difference. First operand has 1900 states, 1392 states have (on average 1.3915229885057472) internal successors, (1937), 1417 states have internal predecessors, (1937), 395 states have call successors, (395), 111 states have call predecessors, (395), 111 states have return successors, (395), 394 states have call predecessors, (395), 395 states have call successors, (395) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:07:31,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:07:35,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:35,014 INFO L93 Difference]: Finished difference Result 3838 states and 5681 transitions. [2021-12-21 16:07:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:07:35,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-21 16:07:35,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:35,038 INFO L225 Difference]: With dead ends: 3838 [2021-12-21 16:07:35,039 INFO L226 Difference]: Without dead ends: 1936 [2021-12-21 16:07:35,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:07:35,058 INFO L933 BasicCegarLoop]: 2339 mSDtfsCounter, 3569 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 1146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3681 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1146 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:07:35,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3681 Valid, 2747 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1146 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-21 16:07:35,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2021-12-21 16:07:35,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1896. [2021-12-21 16:07:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1391 states have (on average 1.387491013659238) internal successors, (1930), 1412 states have internal predecessors, (1930), 393 states have call successors, (393), 113 states have call predecessors, (393), 111 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2021-12-21 16:07:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2705 transitions. [2021-12-21 16:07:35,225 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2705 transitions. Word has length 12 [2021-12-21 16:07:35,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:35,225 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 2705 transitions. [2021-12-21 16:07:35,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:07:35,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2705 transitions. [2021-12-21 16:07:35,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-21 16:07:35,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:35,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:07:35,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:07:35,228 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:35,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash 236165592, now seen corresponding path program 1 times [2021-12-21 16:07:35,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:35,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471392514] [2021-12-21 16:07:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:35,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:07:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:36,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:36,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471392514] [2021-12-21 16:07:36,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471392514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:36,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:36,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:07:36,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668641505] [2021-12-21 16:07:36,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:36,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:07:36,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:36,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:07:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:07:36,426 INFO L87 Difference]: Start difference. First operand 1896 states and 2705 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:07:41,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:41,214 INFO L93 Difference]: Finished difference Result 2361 states and 3521 transitions. [2021-12-21 16:07:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:07:41,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-21 16:07:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:41,227 INFO L225 Difference]: With dead ends: 2361 [2021-12-21 16:07:41,227 INFO L226 Difference]: Without dead ends: 2358 [2021-12-21 16:07:41,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:07:41,229 INFO L933 BasicCegarLoop]: 2585 mSDtfsCounter, 4052 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 1082 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4244 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1082 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-21 16:07:41,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4244 Valid, 2964 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1082 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-21 16:07:41,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-12-21 16:07:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 1895. [2021-12-21 16:07:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1391 states have (on average 1.3867721063982745) internal successors, (1929), 1411 states have internal predecessors, (1929), 392 states have call successors, (392), 113 states have call predecessors, (392), 111 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2021-12-21 16:07:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2703 transitions. [2021-12-21 16:07:41,294 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2703 transitions. Word has length 13 [2021-12-21 16:07:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:41,294 INFO L470 AbstractCegarLoop]: Abstraction has 1895 states and 2703 transitions. [2021-12-21 16:07:41,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:07:41,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2703 transitions. [2021-12-21 16:07:41,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-21 16:07:41,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:41,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:07:41,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:07:41,296 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:41,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:41,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1270297853, now seen corresponding path program 1 times [2021-12-21 16:07:41,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:41,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153339432] [2021-12-21 16:07:41,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:41,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:42,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:07:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:42,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:42,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153339432] [2021-12-21 16:07:42,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153339432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:42,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:42,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:07:42,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744000790] [2021-12-21 16:07:42,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:42,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:07:42,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:07:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:07:42,197 INFO L87 Difference]: Start difference. First operand 1895 states and 2703 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:07:43,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:07:47,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:47,206 INFO L93 Difference]: Finished difference Result 2360 states and 3519 transitions. [2021-12-21 16:07:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:07:47,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-21 16:07:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:47,225 INFO L225 Difference]: With dead ends: 2360 [2021-12-21 16:07:47,225 INFO L226 Difference]: Without dead ends: 2357 [2021-12-21 16:07:47,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:07:47,228 INFO L933 BasicCegarLoop]: 2576 mSDtfsCounter, 4057 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 1082 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1082 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-21 16:07:47,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4251 Valid, 2955 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1082 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-21 16:07:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2021-12-21 16:07:47,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 1894. [2021-12-21 16:07:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1391 states have (on average 1.3860531991373113) internal successors, (1928), 1410 states have internal predecessors, (1928), 391 states have call successors, (391), 113 states have call predecessors, (391), 111 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2021-12-21 16:07:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2701 transitions. [2021-12-21 16:07:47,304 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2701 transitions. Word has length 14 [2021-12-21 16:07:47,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:47,304 INFO L470 AbstractCegarLoop]: Abstraction has 1894 states and 2701 transitions. [2021-12-21 16:07:47,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:07:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2701 transitions. [2021-12-21 16:07:47,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 16:07:47,305 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:47,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:07:47,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:07:47,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:47,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash -726019525, now seen corresponding path program 1 times [2021-12-21 16:07:47,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:47,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985602909] [2021-12-21 16:07:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:47,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:48,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:07:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:48,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:48,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985602909] [2021-12-21 16:07:48,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985602909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:48,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:48,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:07:48,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099447559] [2021-12-21 16:07:48,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:48,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:07:48,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:07:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:07:48,171 INFO L87 Difference]: Start difference. First operand 1894 states and 2701 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:07:57,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:57,550 INFO L93 Difference]: Finished difference Result 6416 states and 9496 transitions. [2021-12-21 16:07:57,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:07:57,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-21 16:07:57,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:57,572 INFO L225 Difference]: With dead ends: 6416 [2021-12-21 16:07:57,572 INFO L226 Difference]: Without dead ends: 4528 [2021-12-21 16:07:57,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:07:57,591 INFO L933 BasicCegarLoop]: 3215 mSDtfsCounter, 5058 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 4192 mSolverCounterSat, 1481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5379 SdHoareTripleChecker+Valid, 4432 SdHoareTripleChecker+Invalid, 5673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1481 IncrementalHoareTripleChecker+Valid, 4192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:07:57,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5379 Valid, 4432 Invalid, 5673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1481 Valid, 4192 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2021-12-21 16:07:57,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4528 states. [2021-12-21 16:07:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4528 to 3850. [2021-12-21 16:07:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 2839 states have (on average 1.3874603733709052) internal successors, (3939), 2868 states have internal predecessors, (3939), 786 states have call successors, (786), 214 states have call predecessors, (786), 224 states have return successors, (898), 791 states have call predecessors, (898), 774 states have call successors, (898) [2021-12-21 16:07:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 5623 transitions. [2021-12-21 16:07:57,730 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 5623 transitions. Word has length 15 [2021-12-21 16:07:57,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:57,730 INFO L470 AbstractCegarLoop]: Abstraction has 3850 states and 5623 transitions. [2021-12-21 16:07:57,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:07:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 5623 transitions. [2021-12-21 16:07:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 16:07:57,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:57,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:07:57,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:07:57,734 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:57,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:57,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1033255674, now seen corresponding path program 1 times [2021-12-21 16:07:57,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:57,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157577683] [2021-12-21 16:07:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:57,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:58,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:07:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:58,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:58,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157577683] [2021-12-21 16:07:58,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157577683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:58,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:58,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:07:58,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184545744] [2021-12-21 16:07:58,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:58,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:07:58,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:58,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:07:58,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:07:58,572 INFO L87 Difference]: Start difference. First operand 3850 states and 5623 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)